package me.stormma.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * <p>Created on 2017/4/14.</p>
 *
 * @author stormma
 *
 *
 * @Description: <p>线程池的配置类</p>
 */
@Configuration
@EnableAsync
public class ExecutorConfig {

    /** Set the ThreadPoolExecutor's core pool size. */
    private int corePoolSize = 10;
    /** Set the ThreadPoolExecutor's maximum pool size. */
    private int maxPoolSize = 400;
    /** Set the capacity for the ThreadPoolExecutor's BlockingQueue. */
    private int queueCapacity = 10;

    @Bean
    public Executor myAsync() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(corePoolSize);
        executor.setMaxPoolSize(maxPoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setThreadNamePrefix(" uploadimg-");

        /*CALLER_RUNS：不在新线程中执行任务，而是有调用者所在的线程来执行*/
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.initialize();
        return executor;
    }
}
